• APS-C 369.7mm2
  • 14.6 megapixels
  • ISO 100 - 3200
  • APS-C 369.0mm2
  • 19.6 megapixels
  • 28.00mm (35mm eq.)
  • Detailed specifications
  • Samsung GX-20
  • Sigma dp1 Quattro
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Prices:   Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: GX-20 dp1 Quattro
Alternate Model Number(s):    
Camera Format: Pro SLR Mid-Sized
Currently Manufactured: No Yes
Retail Price: $1399.95 $999.00
Street Price:   $1,103.00
Date Available: 2008-03-30 2014-10-15
Tripod Mount: Yes Yes
Weight: 25.2 oz (714 g) 15.0 oz (425 g)
Size: 5.6 x 4.0 x 2.8 in.
(142 x 102 x 70 mm) 		6.4 x 2.6 x 3.4 in.
(161 x 67 x 87 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:   Foveon X3 Quattro
Effective Megapixels: 14.6 19.6
Sensor Format: APS-C APS-C
Sensor size: 369.72mm2 (23.7mm x 15.6mm) 368.95mm2 (23.50mm x 15.70mm)
Approximate Pixel Pitch: 5.07 microns 4.33 microns
Focal Length Multiplier: 1.5x 1.5x
Aspect Ratio: 3:2 3:2
Color Filter Type: RGBG Full Color
Anti Aliasing Filter: Fixed Not needed
Self-Cleaning: Yes No
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No No
DxO Sensor Score: 68  
DxO Color Depth Score (bits): 23.1  
DxO Dynamic Range Score (evs): 11.2  
DxO Maximum Effective ISO Score (iso): 714  
Image Capture
Image Resolution: 4672 x 3104 (14.5 MP, Other),
3872 x 2592 (10.0 MP, Other),
3008 x 2000 (6.0 MP, 3:2),
1824 x 1216 (2.2 MP, 3:2) 		5424 x 3616 (19.6 MP, 3:2),
4816 x 3616 (17.4 MP, 4:3),
5424 x 3048 (16.5 MP, 16:9),
3616 x 3616 (13.1 MP, 1:1),
5424 x 2328 (12.6 MP, Other),
2704 x 1808 (4.9 MP, 3:2),
2400 x 1808 (4.3 MP, 4:3),
2704 x 1520 (4.1 MP, 16:9),
1808 x 1808 (3.3 MP, 1:1),
2704 x 1160 (3.1 MP, Other),
7680 x 5120 (39.3 MP, 3:2),
 6816 x 5120 (34.9 MP, 4:3),
 7680 x 4320 (33.2 MP, 16:9),
 5120 x 5120 (26.2 MP, 1:1),
 7680 x 3296 (25.3 MP, Other)
Image File Format: JPEG (EXIF 2.21), RAW (.PEF, .DNG), 14-bit JPEG (EXIF 2.3), 14-bit RAW (.X3F), RAW+JPEG
Continuous-mode frames/second: n/a n/a
Video Capture
Can take movies: No No
Movie Resolution:
Movie File Format:    
Composite Video Out: Yes No
NTSC/PAL Switchable Video: Yes n/a
Video Usable as Viewfinder: No n/a
HD Video Out: No No
HD Video Connection:
Lens & Optics
Lens Mount: Pentax K (KA/KAF/KAF2) n/a
Lens: n/a Sigma Lens; 9 elements in 8 groups
Focal Length (35mm equivalent):   28mm
Focal Length (actual):   19mm
Zoom Ratio:   1.00x
Aperture Range:   f/2.8 - f/16, with 9-bladed diaphragm
Integrated ND Filter: No No
Normal Focus Range:   100 cm to Infinity
39.4 in to Infinity
Macro Focus Range:   20 cm to Infinity
7.9 in to Infinity
Filter Thread: n/a 58.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: No
Digital Zoom Values: n/a  
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 11-point TTL phase-matching (SAFOX VIII) Contrast Detection: 9 points select mode, Free move mode (It is possible to change the size of Focus Frame to Spot, Regular and Large), Face Detection AF mode
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD No / LCD
Viewfinder Type: SLR type; eye-level pentaprism Optional VF-31 hotshoe-mounted optical viewfinder available
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent):    
Viewfinder Magnification (nominal/claimed):    
Display
Eye-level Viewfinder: Yes No
Rear Display: Yes Yes
Rear Display Size (inches): 2.7 3.0
Rear Display Resolution: 230,000 dots 921,600 dots (307,200 px)
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 32.0x 10.0x
Top Deck Display: Yes No
Exposure
Maximum ISO (native): 3200 6400
Minimum ISO (native): 100 100
ISO Settings: Auto, 100, 200, 400, 800, 1600, 3200, 6400 (expanded) Auto, 100-6400 in 1/3 EV steps; Auto has programmable High/Low limits
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (W, D, N), Flash, Color Temperature Auto, Auto (Lighting Source Priority), Daylight, Shade, Overcast, Incandescent, Fluorescent, Color Temperature, Flash, Custom
Shutter Speed Range: 1/4000 - 30 sec 1/2000 - 30 sec
Bulb Mode: Yes No
Exposure Compensation: +/- 3.0EV in 0.3EV steps +/- 3.0EV in 0.3EV steps
Metering Modes: TTL open-aperture: 16-segment, Center-weighted, Spot Evaluative, center-weighted average, spot
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: Sensitivity Priority, Shutter and Aperture Priority Color modes: Standard, Vivid, Neutral, Portrait, Landscape, Cinema, Sunset Red, Forest Green, FOV Classic Blue, FOV Classic Yellow, Monochrome
Self Timer: 2 or 12 seconds 2 or 10 seconds
Time Lapse (intervalometer):   Yes
High Resolution Composite: No No
Flash
Built-in Flash: Yes No
Flash Modes: On, Redeye, Slow Sync, Slow Sync + Redeye, Trailing Curtain Sync, Wireless Normal, Redeye, Slow Sync., Redeye + Slow Sync (with compatible external flash unit)
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: Depends on lens Optional EF-140S compact flash has GN=14m (ISO 100)
Max Flash Sync: 1/180 1/1250 at F2.8, 1/1600 at F4 and 1/2000 at F5.6
Flash Exposure Compensation:   +/- 3.0 EV in 0.3EV steps
External Flash Connection: Hot Shoe, X-Sync Socket Hot Shoe
Built-In Wireless Flash Control:    
Image Storage
Usable Memory Types: SD / SDHC SD / SDHC / SDXC
UHS Support:   UHS-I
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: RAW (.PEF, .DNG), 14-bit 14-bit RAW (.X3F), RAW+JPEG
Movie File Format:    
Included Memory: No memory included No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No No
NFC: No No
Bluetooth: No No
Built-In GPS: No No
Microphone Jack: No No
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 2.0 High Speed
PictBridge Compliant: Yes No
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Wired or IR Via USB cable switch
Connections (extended): DC input, wired remote  
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):    
Cycle time for RAW shooting in single shot mode (seconds per frame):    
Buffer size for RAW shooting in single shot mode (frames):    
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):    
Camera penalizes early shutter press?
JPEG shooting speed in burst mode (fps, max resolution):    
Buffer size for JPEG shooting in burst mode (frames, max resolution):    
RAW shooting speed in burst mode (fps):    
Buffer size for RAW shooting in burst mode (frames):    
RAW+JPEG shooting speed in burst mode (fps):    
Buffer Size for RAW+JPEG shooting in burst mode (frames):    
Shutter lag (full AF, wide/mid):    
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus):    
Shutter lag (full AF, with flash):    
Shutter Lag (prefocused):    
Shutter Lag (notes):    
Startup Time:    
Play -> Record Time:    
Flash cycle time, full power:    
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   200 shots
Battery Life, Still (CIPA Rating OVF/EVF):    
Battery Life, Video:    
Battery Form Factor: Proprietary Proprietary BP-51
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary Lithium-ion rechargeable 2 x Proprietary BP-51 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included: Yes
Internal Charging Supported: No
Software
Included Software:   SIGMA Photo Pro
OS Compatibility:   Windows, Mac OS
Miscellaneous
Notes & Features: New Foveon X3 Quattro sensor and TRUE III image processing engine.